6 posts · page 1 of 1
Master the monotonic stack pattern — next greater/smaller element, largest rectangle in histogram, maximal rectangle, trapping rain water, stock span, daily temperatures.
Learn the monotonic stack technique — next greater element, stock span, largest rectangle, and trapping rain water solved with clean Python templates.
Master stack and queue patterns for LeetCode including monotonic stacks, min stacks, queue implementations, and practical templates.
Solve Daily Temperatures with a monotonic decreasing stack of indices. Includes brute force comparison, walkthrough, complexity, and interview tips.
Design a stack that supports push, pop, top, and getMin in constant time. Walkthrough of the two-stack and pair-stack solutions with edge cases and interview tips.
A clean walkthrough of Valid Parentheses with the optimal stack solution. Covers edge cases, complexity, and how to explain the approach in interviews.